I had read about it but could not find a way to buy the eSIM online. I read a few posts saying TIM was horrible. It has been very good for us over the last three weeks. Only using it to supplement my Verizon data, which doesn't include much.
I had to go to a TIM store, they are all franchisee, so YMMV. It was late in the day when I had time to go and ended up in Roma Termini, not a great place at night. First TIM store I found in the train station didn't sell eSIMs, after a bit they finally told me the TIM store downstairs sold them. Went downstairs and once I found the store they did sell them! The gal behind the counter set it up on my phone to be my cellular data in use. It was around 24 Euros, and with the Rump tariffs in full swing hammering the exchange rate we paid the amount in the subject line in dollars. (thanks Rump)
Been using it three weeks so far. Rome, Naples, Florence, Cinque Terre and now Genoa. No complaints. Have had 2-3 bars pretty much everywhere.
We will be out of Italy by the end of next week.
The only issues I have is with the phone App. There is NO English version.(Really, the plan is called TIM Tourist) So you keep getting notified in Italian about, who knows what...
If I traveled again to Italy, I would buy this eSIM again, lots of data. (my iPhone only takes eSIMs)
I was glad I kept my Verizon plan, but just switched it to their international plan, which only came with 10 gb of data, but having the phone working to get texts from my banks and other places for 2FA was critical to being able to get things done on our long trip abroad.
-Bill